Fountain pen



March 15 S. KANNER FOUNTAIN PEN Filed May 8, 1957 Patented Mar. 15, 1938 UNITED sTATEs PATENT OFFICE FOUNTAIN PEN Samuel Kanner, New York, N. Y. Application Mays, 1937, serial No; v141,415

9 Claims. (ol. 12o- 47) This invention relates to improvementsin fountain pens of the type having a barrel provided with separate ink reservoirs and writing instruments at opposite ends, and employing a separate plunger which is operable in each reservoir to ll the latter with ink by means of suction.

`It is the purpose of my invention to provide a fountain pen having a barrel supporting a pen point at each end and comprising separate ink reservoirs to supply ink to each pen point, a plunger for each reservoir having a plunger rod arranged and constructed to telescope with the rod of the other plunger, and a section to unite the rservoirs and to provide a chamber accom.- modating the plunger rods -in their telescoped position.

A further object of the present invention is to provide a double nib fountain pen of this character which may be of normal dimensions and which will have an ink capacity as great if not greater than any ordinary fountain pen having a single reservoir.

Another object of this invention is to provide anarrangement and construction of caps for the opposite ends of the barrel, whereby either cap may be removed and separably carried at either end of the fountain pen.

Briefly, it might be pointed out that while double nib fountain pens of the plunger lling type have already been devised to accommodate dilerently colored inks and for two styles of pen points, these pens have never been of any practical or commercial value, because of the room required within the barrel of the pen to accom.- modate not only the two separate reservoirs but the projecting plunger rods as well.

According to the present invention the difculty pointed out above has been completely overcome by the use of the plunger rods which may be telescoped one within the other when the plungers are retracted as when the reservoirs have been filled.

One embodiment of a fountain pen employing the novel features of my invention has been illustratively exemplified in the accompanying drawing, described in the following specification and set forth in the appended claims.

Figure 1 shows a side elevational view of a fountain pen embodying my inventionand illustrates one cap in longitudinal section;

`Figure 2 illustrates a side elevational View of the pen and shows a rearrangement of the caps to uncover one pen point for use;

Figure 3 is a substantially longitudinal sectional view of the fountain pen showing one plunger completely retracted and the other only partly retracted, the position of the latter plunger being one not ordinarily assumed because after filling both reservoirs both plungers and their rods would be in fully projected positions, but for thepurpose of clearly illustrating these elements the present positions have been assumed;

Figure 4 is a substantially transverse sectional View taken on line 4 4 of Figure 3;

Figure 5 is a similar sectional view taken on lines 5 5 of Figure 3;

Figure 6 isa transverse section taken on lines 6 6 of Figure 3.

Referring now to the drawing in detail, the fountain pen comprises a barrel consisting of three coaxially aligned tubular sections IIJ, I I and I2, the outer-most sections IIJ and I2l are constructed preferably of transparent stock and are of the same dimensions and form the separate reservoirs to contain ink. The inwardly directed ends of the sections I0 and I2 are closed by plugs I3 and jI4, respectively, each comprising a discshaped flange, I 5 cemented in the end of the section I3 I4 and a projectingthreaded nipple I6 to screw into the threaded ends of the intermediate section Il, one end of the latter having an eir-V teriorly threaded portion I 1.

The plug I3 is provided with a bore I8 having a relatively small diameter for the outer end and a larger diameter at the inner or threaded end to form an annular recess I9. A plunger 20 is reciprocally disposed within the section or reservoir Ill and` consists of a resilient disc 2I of the diameter of the bore of the section I0, and disc plates 22 embracing opposite faces of the resilient disc 2|. The three discs 2I and 22 are permanently attached to the end of a plunger rod 23, which projects through the bore I8 and which is of a diameter to fit closely in the smaller section thereof. The free end of the plunger rod 23 is adapted to project into the intermediate section Il of the barrel When projected outwardly after filling the reservoir I0. The plunger rod 23 is preferably a solid shaft having a slightly reduced free end to provide a grip 24.

The vplug I4 for the other reservoir section I2 is provided with a uniform axial bore 25 to receive a tubular plunger rod 26 having a head at its end within the section I2 consisting of a resilient disc 21 and embracing disc plates 28, the end of the rod 2B carrying the head being closed. The inside diameter of the plunger rod 26 is slightly greaterthan the diameter of the solid rod 23 and the two rods are of a length and so arranged as to permit the rod 23 to telescope into CFI the tubular rod 26 when the pen is assembled and both rods are projected outwardly from their reservoirs as illustrated particularly in Figures 3 and 5, the extreme outwardly projected position of the rod 26 bringing the free end thereof to seat in the recess I9 of the plug I3.

A plug 29 is provided for the outer end of the reservoir section I0 and consists of a reduced collar 30 fitting tightly and being cemented in the section I0 and a tip provided with a bore to accommodate the feeding spoon 3| and to support a conventional nib 32.

A further plug 33 is carried by the outer end of the other reservoir section I2 and consists of a collar 34 permanently carried in the bore ofthe section I2 and provided with anoutwardly projecting exterorly threaded nipple 35. The plug is bored to receive a feeding spoon 36 and a conventional nib 3'I. n

A relatively short cap 38 khaving a closed outer end andan interiorly 4threaded inner end 39 is screwed down over thenib'31 byv engaging the end 39 over the nipple 35.

A main cap 40 embracing the entire length of the reservoir section II!,`collar 3D and nib 32, comprises a tubular section having an interiorly threaded inner open end 4I to screw over the threaded end Il of the mid-section II and a closed outer end having an outwardly projecting threaded nipple 42 to receive the threaded end 39y of the short cap 38, when the latter has been removed to place the end of the pen having the nib 31 in readiness for use, (see Figure 2).

To ll the reservoirs I0 and I2, the latter are unscrewed from the mid-section II and the caps 38 and 40 are removed.V The plunger rods 23 and 25 are pushed into and toward the outer ends of their sections IU and I2 and then the nib end of each is inserted into the ink supply, whereupon the plunger rod may be drawn slowly outwardly causing the ink to be sucked into the reservoir through the feeding spoon 3I--36 until the head of the plunger engages the plug I3-I4 and the reservoir has become fully charged with ink. The-plunger rods are allowed to remain in projected position and each section is then screwed into position in anV end of the mid-section I I, the Y Vprojecting plunger 'rodstelescoping oneinto lthe other. The caps 38 and-40 are finally replaced and both ends of the pen are protected until ready to be used. Y

VHaving described my invention and the manner in which the same may be practiced, what I now claim and desire to secure by Letters Patent is2- Y 1. In a fountain pen, a barrel comprising axially spaced reservoirs, a plunger movable in each reservoir and having a rod projecting outside the latter and towards the other reservoir, said plunger rods cooperating in their projected positions to telescope one within the other in the space between the reservoirs.

2. In a fountain pen, arbarrel comprising separable axially spaced reservoirs, a writing nib at the outer end of each reservoir, a plunger movable in each reservoir and having a plunger rod projecting through the inner end of the reservoir and towards the other plunger rod, said rods in projected positions telescoping one within the other in the space between the reservoirs.

3. In a fountain pen, a barrel comprising axially spaced reservoirs having `writing nibs at their outer ends, a plunger movable in each reservoir having a rod projecting through the inner end, one rod being tubular and telescoping over the other rod in the projected positions of the rods.

4. In a fountain pen, a barrel comprising axially spaced reservoir sections having writing nibs at their outer ends, a mid-section separably attached to both reservoir sections, a plunger movable in each reservoir section having a plunger rod projecting through the inner end of each reservoir and into the mid-section, one rod being hollow to permit the other rod to telescope therein in the projected positions of the rods.

5. In a fountain pen, a barrel comprising a reservoir section at each end and an intermediate section separably attached to the reservoir sections, a movable plunger in each reservoir section having a plunger rod projecting through the inner end of the reservoir section and into the intermediate section, one plunger rod being tubular to receive and embrace the other plunger rod in the projected positions of the rods.

6. In a fountain pen, a barrel comprising three sections of approximately the same length, the outer sections being separably attached to the mid-section, plugs for ends of the outer sections to form reservoirs for ink, a pen point carried by the outside plugs of each reservoir section, and a plunger movable in each reservoir and having a plunger rod projecting through the plug at the inner end of each reservoir and into the mid-section, one plunger rod being tubular to receive the other rod when both rods are pulled to their maximum positions outside the reservoir sections.

7. In a fountain pen, a barrel comprising axially spaced reservoir sections, one thereof having a threaded nipple at its outer end, and an intermediate section attachably connected to said reservoir sections and provided with an exterior- 1y threaded portion at one end, a cap to embrace one reservoir and screw over the threaded portion of the mid-section, the outer end of the cap beingclosed and provided with a threaded'nipple projecting beyond the closed end, and a second cap interiorly threaded to screw over the threaded nipples of either the reservoir section or first cap.

8. In a fountain pen, a barrel comprising three tubular axially aligned sections, the end sections having plugs in their opposite ends to form reservoirs for ink storage, the plugs in the inner ends of the reservoir sections having threaded nipples to screw into the mid-section, the plugs in the outer ends of the reservoir sections having pen points to which ink from the reservoirs feeds, a plunger movable in each reservoir section comprising a head portion, and a projecting plunger rod passing through and movable in openings in the said inner plugs and into the mid-section, one plunger rod being tubular and receiving the other rod in its bore when both rods are drawn out of their reservoirs and the heads brought against the inner plugs.

9. A fountain pen as claimed in claim 8, including a cap to screw onto the end of the midsection and enclose the adjacent reservoir and nib, and a threadedv nipple for the closed end of the cap, and a second cap to screw onto the outer plug of the other end of the barrel to enclose the second nib, said second cap being capable of being screwed onto the threaded nipple of the first cap.

SAMUEL KANNER.

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